IBC 2003/ASCE 7-02 wind loads vs. UBC
IBC 2003/ASCE 7-02 wind loads vs. UBC
(OP)
I'm looking for feedback about the 2 codes. For the simplified procedure in 2003 IBC/ASCE 7-02, it appears the loads you come up with (using table 1609.6.2.1(1) and 1609.6.2.1(4))are significantly less than what you get using UBC. comments?






RE: IBC 2003/ASCE 7-02 wind loads vs. UBC
RE: IBC 2003/ASCE 7-02 wind loads vs. UBC
RE: IBC 2003/ASCE 7-02 wind loads vs. UBC
The IBC is based on the same research, however, the pressure coefficients are revised somewhat, and the code-writers attempted to "simplify" the procedure in tables presented in the IBC2000. The end result was very confusing, and did not lend itself well to automated calculation.
RE: IBC 2003/ASCE 7-02 wind loads vs. UBC
RE: IBC 2003/ASCE 7-02 wind loads vs. UBC
A good software or spreadsheet makes it easy (practical) to input the various roof configurations, so the UBC Method 1 was very easy to automate. Later, when the IBC came, all I had to do in my spreadsheet was to convert to the 3-second gust velocity and adjust some coefficients, and re-write the basic pressure formula. That way, I avoided all the confusion with the IBC tables, and came up with the same result as ASCE-7.
RE: IBC 2003/ASCE 7-02 wind loads vs. UBC
RE: IBC 2003/ASCE 7-02 wind loads vs. UBC
I would - but only if you have a spreadsheet to trade (sorry, I don't like to hand the farm over to strangers). <g>
It doesn't do the full IBC overcomplicated analysis (doesn't recognize higher pressure at end zone, wind direction at 45 degrees off principal axis, etc) but it may give you some ideas to incorporate in your own spreadsheet projects.
RE: IBC 2003/ASCE 7-02 wind loads vs. UBC
RE: IBC 2003/ASCE 7-02 wind loads vs. UBC
I actually don't have anything recent for concrete, except I recently did a cantilever retaining wall and a concrete basement wall spreadsheet.
I like to look at other's spreadsheets because it gives me ideas to incorporate. I only use Excel; Mathcad is not an option.